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From: | BALATON Zoltan |
Subject: | Re: [Qemu-devel] Question about hcd-ohci and address_space_translate |
Date: | Fri, 30 May 2014 16:49:26 +0200 (CEST) |
User-agent: | Alpine 2.02 (LMD 1266 2009-07-14) |
On Fri, 30 May 2014, Paolo Bonzini wrote:
Il 30/05/2014 00:33, BALATON Zoltan ha scritto:usb-ohci: pci-ohci: USB Operational Unassigned mem read 0000000007c9ae00 Unassigned mem read 0000000007c9ae04 [...] Unassigned mem read 0000000007c9ae84 usb-ohci: HCCA read error at 7c9ae00 ohci_die: DMA error The read happens through ohci_read_hcca which eventually calls phys_page_find that returns §ions[PHYS_SECTION_UNASSIGNED] here:Are you setting the bus master enable bit in the command register?No I didn't but setting it does not seem to change it, I still get the same error.Does it change the memory map?
Sorry, it does indeed when I do it correctly. It adds this: pci-ohci 0000000000000000-ffffffffffffffff (prio 0, RW): alias bus master @system 0000000000000000-ffffffffffffffffand it goes further now. Thanks for your help, see if I'll have more questions coming up.
Regards, BALATON Zoltan
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